/*注释 wrap中的display: none; 将会显示功能界面的checkbox多选框*/
.wrap {
  display: none;
  position: relative;
  width: 100%;
    height: 100%;
  /*margin: -72px 0;*/
  /*top: 50%;*/
  float: left;
}

label {
  margin: auto;
}

input {
  position: absolute;
  left: -9999px;
}

.slider-v3 {
  position: relative;
  display: block;
  /*margin-block-start: 18px;*/
  width: 4em;
  height: 2em;
  cursor: pointer;
  border-radius: 1.5em;
  transition: 350ms;
  background: #ddd;
}

.slider-v3::after {
  position: absolute;
  content: '';
  width: 1em;
  height: 1em;
  top: 0.5em;
  left: 0.5em;
  border-radius: 1.5em;
  transition: width 187ms ease-out, height 279ms 50ms ease-in, top 300ms 50ms ease-in, left 250ms 50ms ease-in, background 300ms ease-in, box-shadow 300ms ease-in;
  background: #f2f2f2;
  box-shadow: 0 0 0 1.5em #f2f2f2 inset;
}

input:checked + .slider-v3::after {
  width: 1em;
  height: 1em;
  top: 7px;
  left: 30px;
  background: #3cb1e7;
  box-shadow: 0 0 0 0 #f2f2f2 inset;
}
